Developing-tray rocker.



.No. 634,639. atented on. 40, I899. J. a CLARKE. I

' DEVELOPING IRA/Y ROCKER.

(Application-filed n im, 1896.)

m lodeL] T WITNESSES j t U-NITED STATEs; P T NT OFFICE.

"f-JOI IN ire-Hermon CLARKE,OE'FRA-MTNGHAM, MASSACHUSETTS.

DEVELOPING-TRAY ROCKER.

srnczmcn rxon formingpm of Letters Patent No. 634,639, dated October 10,1899.

Applidatlonfiled Kay 16. 1895. 8eris1ll0-591F 746. more.)

To whom/it may concern.- I Be-it knownthat I, JOHN iHOUGHTON.

,C'LARKmof Framingham, in the county or "Middlesex and State ofMassachusetts, have invented a newand Improved Photodevelop-' lug-TrayRocker, of'which the following is a full, clear, and-exactdescription. Y

The objectof the invention is to provide a new andimprovedvphotodeveloping-tray rocker; which is simple and durable incon-- strn'ction, designed to receive the ordinary developing-tray, andarranged topermitthe operator to conveniently and-easily impart)theneeessary motion to the tray to properly 4'5.

develop photographic plates contained in the *lt i-jay and withoutrequiring 'theflcperator to hold the tray inboth hands.v

, *gThe invention consists of a tray-roekercon fj fiv'illbezfullydeserib'ed poin fi t i'nitherde "Thesimpjr 'ved tray-jrocker'isprovided with a structedashereinafterdesc'ribcd and-elaiined.

Theinventicn also consists ofcertain peas and. detailsandcoinbinationsof the sam e, asi hereinafter and then 1, drawingsiiorming a'fpart of this specification, F' n'w sh si'mii s eharse m i rere fin cateijcerrespondinfiiplrtsin all the-views;

tray-{receiving frame .provided witlif af v plat-form K,- carrying 'afopposite sides the i down rdlyncrrockers A"; adapted f I to'rcck on a,table or othersiipportys'o as toimpart a rocking motion to the-platformLA'-.*

In the platform Afisifcrmed an -opening A; adapted to receivezpthqjtraygeontaining :the'

: developer and the platee' tehe 'deyeloped, and

this tray'B is formedjiith' the nsnal ;incl'inedf sides B, adapted .torest on the wan: the

' opening A, so'tha't thesnidtrayiBis'firmly held in theplattorm---A,.'and ivhenjgthelatter;

t is rocked the tray rocks with itto' canse 'the I developerto gentlypass'over the-film of the; plate, seas to develop-the negative the yproper manner.

. It is understood that the operator placin'g the finger-onone end ofthe frame A e r dv ls i a rocking motion the "said frame; soas to causethe deve1cping not liable to soil or stain his fingersby con-- tact withthe deyeloper, as is so frequently the case with trey-s of ordinaryconstruction. -'It will be seen by reference to Figs. 2 and 3 that therockers A are of asni-table height to snpport'the bottom .of the tray Bsuch a distance above thesnrface on which the frame is placed' asgifbprevent the tray from touching the snrfagced'uring the roekingoperation.Asmus ssm in the said figuresithe open-j ing is are "sizesomewhat'inexcess oft-he size of thebottom'of the tray, but 'less'than thetop'spjrf ace of the tray, to cause the inclined sides/BT: snugly fitonto the walls of'the openingAito'snpport theftray in the frame. ltiwiilalso be seemthatby thearran'gement fiescribe'd the operator can conveniently place a thetray -inposition on; the platform A and removethesame therefrom whenever the plates are developed.

; his further understood that the tray roclcer may Deconstructedforsupporting two or more --Patent- 1. As an improved articleofinan'ufactnre a jcintless"photodeveloping-tray rocker made 'from'asingle piece ofmater'ial, the .top of" which has a cavity for thereception or the tray and the. sides of which are parallel with eachother and rounded or curved upon their junder edges. V '2. Ajo'intlessphotodevelopingstrayTrockermade from a flat "blank having a relativelylarge central tray-holdingcavity the outer opw ,posi-ng edges of whichblank are curved only;

rounded soil are bent or formed to become, I

parallel with 'eaeh'other and to'extend in the" same'direction fromthe.re'mainde'r'of the. blank, as and for the purposes set forth.

- JOHN HOUGHTON CLARKE, itnesses.- a

EMMA'L-CLARKE,

r Fnnmn S. CHENEY.-

